1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * This file and its contents are supplied under the terms of the 31 * Common Development and Distribution License ("CDDL"), version 1.0. 32 * You may only use this file in accordance with the terms of version 33 * 1.0 of the CDDL. 34 * 35 * A full copy of the text of the CDDL should have accompanied this 36 * source. A copy of the CDDL is also available via the Internet at 37 * http://www.illumos.org/license/CDDL. 38 * 39 * Copyright 2020 Oxide Computer Company 40 */ 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 48 #include <machine/vmm.h> 49 50 #include "vmcb.h" 51 #include "svm.h" 52 53 struct vmcb_segment * 54 vmcb_segptr(struct vmcb *vmcb, int type) 55 { 56 struct vmcb_state *state = &vmcb->state; 57 58 switch (type) { 59 case VM_REG_GUEST_CS: 60 return (&state->cs); 61 case VM_REG_GUEST_DS: 62 return (&state->ds); 63 case VM_REG_GUEST_ES: 64 return (&state->es); 65 case VM_REG_GUEST_FS: 66 return (&state->fs); 67 case VM_REG_GUEST_GS: 68 return (&state->gs); 69 case VM_REG_GUEST_SS: 70 return (&state->ss); 71 case VM_REG_GUEST_GDTR: 72 return (&state->gdt); 73 case VM_REG_GUEST_IDTR: 74 return (&state->idt); 75 case VM_REG_GUEST_LDTR: 76 return (&state->ldt); 77 case VM_REG_GUEST_TR: 78 return (&state->tr); 79 default: 80 panic("unexpected seg %d", type); 81 } 82 } 83 84 uint64_t * 85 vmcb_regptr(struct vmcb *vmcb, int ident, uint32_t *dirtyp) 86 { 87 struct vmcb_state *state; 88 uint64_t *res = NULL; 89 uint32_t dirty = VMCB_CACHE_NONE; 90 91 state = &vmcb->state; 92 93 switch (ident) { 94 case VM_REG_GUEST_CR2: 95 res = &state->cr2; 96 dirty = VMCB_CACHE_CR2; 97 break; 98 99 case VM_REG_GUEST_CR3: 100 res = &state->cr3; 101 dirty = VMCB_CACHE_CR; 102 break; 103 104 case VM_REG_GUEST_CR4: 105 res = &state->cr4; 106 dirty = VMCB_CACHE_CR; 107 break; 108 109 case VM_REG_GUEST_DR6: 110 res = &state->dr6; 111 dirty = VMCB_CACHE_DR; 112 break; 113 114 case VM_REG_GUEST_DR7: 115 res = &state->dr7; 116 dirty = VMCB_CACHE_DR; 117 break; 118 119 case VM_REG_GUEST_EFER: 120 res = &state->efer; 121 dirty = VMCB_CACHE_CR; 122 break; 123 124 case VM_REG_GUEST_RAX: 125 res = &state->rax; 126 break; 127 128 case VM_REG_GUEST_RFLAGS: 129 res = &state->rflags; 130 break; 131 132 case VM_REG_GUEST_RIP: 133 res = &state->rip; 134 break; 135 136 case VM_REG_GUEST_RSP: 137 res = &state->rsp; 138 break; 139 140 default: 141 panic("unexpected register %d", ident); 142 break; 143 } 144 145 ASSERT(res != NULL); 146 if (dirtyp != NULL) { 147 *dirtyp |= dirty; 148 } 149 return (res); 150 } 151